If you're building a 6.7L Cummins for the track, the stock intake manifold will be a choke point. Choosing the best-flowing design allows you to make the highest horsepower and torque on the dyno. Plus you'll get quicker spool, greater fuel efficiency, and maximize the boost and manifold air density regardless of your turbo setup.

Here's a full flow bench comparison of all the major intake elbow products we could find.

The Banks Monster-Ram intake elbow is available for non-emissions race-only vehicles and is not intended for on-highway use. Road-going RAM trucks will use the new 50-state legal Monster-Ram.
https://bankspower.com/collections/in...

Monster-Ram with 4" inlet, red or natural aluminum
https://bankspower.com/products/race-...

Monster-Ram with 3.5" inlet, red or natural aluminum
https://bankspower.com/products/race-...